package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.aliyun.oss.common.utils.HttpUtil;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {

    public static final String wx_login = "https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;
    
    @Autowired
    private UserMapper userMapper;
    
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {

        Map<String, String> map = new HashMap<String, String>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret", weChatProperties.getSecret());
        map.put("grant_type", "authorization_code");
        map.put("js_code", userLoginDTO.getCode());
        String json = HttpClientUtil.doGet(wx_login, map);

        JSONObject jsonObject = JSONObject.parseObject(json);
        String openid = jsonObject.getString("openid");

        if (openid == null) {
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        User user = userMapper.getByOpenId(openid);

        if (user == null) {
           user =  User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
           userMapper.insert(user);
        }
        return user;
    }
}
